Wondering what's going on with the colored sections on Lemon's tail. They are turning grey, and is progressing up his tail. He just shed his tail last week, the grey was there before the shed and after. I don't think it's tail rot since it's not turning black and the underside looks fine. I think it could be shed but it's just weird that the color didn't come back with last week's shed. Basking temps and cool side temps are spot on, we have appropriate UV, he's been eating, pooping, and acting normal. Has anyone else have this happen?